Engine



July 5', 1927.

T. sv. MILLER ENGINE Filed Ju1y5. 1923 2 sheets-shut 1 gzjf f INV OR m@o/vM ATTORNEYS' 1,634 912 July 5 1927' rT. s. MILLER v ENGINE r FiledJuly 5, 1923 z -sheets-sund. '2;

I a/ Q Z f f y yf fyf gay/ ated engines particularly adapted for use asPatented July 5, 1927.

UNITED STATES THOMAS SPENCER MILLER, OF SOUTH ORANGE, NEW' JERSEY.

ENGINE.

Application filed .T uly 5,

My present invention relates to power actutowing or mooring engines, orin other situations where substantially constanttension on a hawser isdesired, and `will be best understood from the following description andthe accompanying drawings of an illustrative embodiment.

In the drawings, Fig. 1 is a plan view, partially in section, of theillustrative embodiment; Fig. 2 is a side elevation thereof; Fig. 3 is arear elevation; Fig. 4 is a rear elevation with parts in section'takenalong the line 4 4 of F ig. 1, and Fig. 5 is an enlarged fragmentarysection taken along the line'5-5 of Fig. 2. l

I have illustrated my invention in connection with a steam actuatedengine, of which 1 is the frame. A drum 2 issecure'd on a shaft 3mounted in bearings 4 and 5 in the frame. 'A hawser 2a is wound on thedrum 2. A gear 6 is secured to the drum by stud bolts or otherwise, anda second gear 7 is loosely mounted on the shaft 3 and is con-k nected4to the gear 6 through a yielding connection which, in the form shown,comprises a ,plurality of springs 8, one end of each spring beingattached to a stud 9 secured to the web 12 of the gear 7, while theopposite end of each of thesprings 8 is secured to a shouldered stud 10passing through a segmental slot 11 in the web 12 of the gear 7, andsecured in the gear 6. The gear 7 is driven by a pinion 16 secured on acrank shaft 17 provided at its ends with crank discs 18, 18. The crankdiscs are provided with theusual crank pins 19 to which are jointedconnecting rods 20, the inner ends of which are connected to the pin onthe crosshead 21 mounted on the slide rod 22 and actuated by the pistons(not shown) in the steam cylinders v23 Ythrough the piston rods24.

The gears 6 and 7 engage pinions k25 and 26 respectively, the latterbeing secured tov a shaft 27 having its bearings in the frame of theengine, and the former is secured to a sleeve 28 loosely mounted on theshaft 27. rlhe end of the sleeve28 is screw-threaded, as at 29, thescrew threads being engaged by the screw threads 30 on a traveling nut31, the shank 32 of which is feathered on the shaft 27. A collar 27a isset into the shaft to prevent longitudinal movement of the sleeve 28with respect to the shaft. The

1923. Serial N0. 649,680.

end of the shank 32 is provided with an annular groove 33 which lisengaged by a ring 33 to which are secured lugs or pins 34 on the ends ofa yoke 35 constituting one end cfa lever member 36, which is pivoted at37 to a bracket 38. The opposite endof the lever 36 is also providedwith a yoke member 39, the two ends of the yoke being provided with pinsor lugs 40, which engage an annular groove 41 formed at the end of thehub 42 (see Fig. 4) of a gear 43.

The gear 43 and its hub are mounted as a nut on a threaded portion 44 ofa valve stemV 45. rlhe left end of the valve stem 45, as viewed inFigure 4, is square, as indicated at 46, and is received in a squareopening in the frame to prevent rotation kof the valve stem and at thesame time `permit longitudinal movement thereof. The opposite end of thestem is bevelled, as at 47, and cooperates with a bevelled seat 48 inthe end of a piston ypoppet valve 49 to form a valve. This piston valve49 is slidingly mounted in a body portion 52 and is provided with anextended bevelled portion 53, which cooperates with a bevelled seat 54in the body portion 52 to form a valve controlling communication betweena live steam chamber 55 and a chamber 56, which communicates with theengine cylinders. The piston valve 49 has a relatively large vaXialopening 51 eX- tending nearly its entire length and a smaller axialopening 50 adjacent the bevelled seat 48. One end of a compressionspring 57 is seated in a. recessed end of the valve 49, while theopposite end of this spring engages an adjustable spring cap 58, theposition of which may be adjusted by an adjusting screw 59 in the end ofa valve bonnet 61. The piston valve 49 is provided with lateral openings51a toestablish communication between chamber 56 and opening 51. Thereverse valve live steam chamber 62 communicates with the live steamchamber- .55 through a port 63 and llive steam is sup- -plied to chamber62 through the pipe 62a. The valve body is also provided with acyllinder exhaust chamber 64.

' The reversing valve 65 is screw threaded on a stem 66 passing througha gland 67, and to the opposite end of which is xed a hand wheel 68. Thestem 66 is Surrounded `by a sleeve 69 supported in bearings 70 and 71.'A tension hand wheel 72 is secured to one end ofthe sleeve 69 while apinion 73 is Secured lo the opposite end thereof und eu- Iugee lhe geul?fl-l. gli. ehm eollui' iii is pi'e'l'- e 'uhlv Seemed on the elem ll loprevent longiiudinul niovemeuli oli `l'he siem (5G und sleeve (il). ASion nulillufeuded on u lhrwuded poi'ion To olf the sleeve (Si), thestop uutv To beineT held ueuineif i'ol'ul'ion bjv u lug 7T? engaging); uslot in the `lrzime b zielietn The nul` iii eneuges udjuslnble slopolhu's To und il) ui eilheil limit ol move- The opeiulion ol theilluritl'ulve device le ue flfollovv:

In order 'lo vvind up the huiveel` lhe operelm' -1'ol'ule,-sy l'he hundwheel ell uml willi ilV the siem (Soi the riel'eu lhi'euds ol whieh movelhe slide vulve 65 lo l'he le'll'. :is viewed Ain Figure ll, therebymieoverine lhe pori G3 und ud writting live eleufm 'leem lhe revel-:ievulve ehmuhei' (h2 lhioueh the poil ($8 lo -the live eleum chamber 5f).Al' l'he sume limo, the Slide 'zilve (i5 eelubliahee` eomnmnieulionbetween poele Uil" :nul ll lo i'oimecsi vlim'lei' eXl unisi ehumbeill--iwith :in exhuusl: chumbei lili1v lending lo lhe exhuusl pine lll!'lhe ope'ul'ol' l'hen virluleu the hund wheel T2 lo tuuu lhe sleeve (il)und lihe pinion T3 which. in'i" rn. volutes gen1' lil. As the if *an* Alund lille hub me held :uuiiue longitudinal movi menlf h v 'eheeiiggjzmemeel` belwveen lhe groove lll ou l'he hub und lhe pine l() onlhe vole Ff), the elem li ie: nioveil longil'udinzillv to the li'ie'h'lol Figi'. Il. The miivemen' ol the stem 4:5 lo l'he z'eie'hl' unseul'sthe hevelled jboi'lzion 53 oi the piston valve l2) from the Seul? Sil?,l'hel'ebv udmitling' live steam from l'lhe ehuii'ililei' 55 lo thechamber lrom Whieh lhe .fxieznu 13115505; lo lhe olvliudeie oil lthefeuggilue. This euuees lhe engine lo tuen the ldll-1mi L) through thepinion ll?. gem? 7 gelul Spui-ugs S lo n'ind in the luiivser.

H iks this Winding' promesses he tension on 'ihe "huvveev hue-eueevc undthis. in turn. graduiv eoiiipiefees lhe epi-ingu el, permililiner etivevolul'ion belwveeu lhe drum :und lille gein.' 7. This relativei'o'eliiou irs, tiens- `milled to che gears 25 :md il; lo @unse veluliverelation between the mil'` 23. :md lhe eeevv QS lo give uli'mgrrilmflinzil mevemenl4 lo 'The lnuli, und. eonseqmfnllv, lo lmn (helevei 736 'lo move the Siem l5 lo the le lila `in Figure il, "thuspelmilting); the spiugr 5T slowly and giiulliill'v to move The bevellednolion 53 ltowad its Seel hilf. llhus` e9 lhe lension ou lhe huivserilieifeusee to u pi'edelei'miued `:xineunt the supply ol' live seizeznnlio che engine e` vliude1s is correspondiugly reduced un'il the pistonvulve lf) remeber; :1 poeitiou "lvhee Jche slezim pussiue into theengine d vliudells just balances lhe lension en #he huvvlsfer.

Bv my present arrangement ,l provide lmenus by which any sudden increasein ten- Siei'i oh l'he huuseif ubove che desired nud pvedelevliiiuedteusioii will cause `the huivfsei lo puy oulv while miv sudden decreasein leneiou on lhe hun'eer will eo1'leupomlingly emule lhe lmn'selr lo hehuuled in.

For exunmle, u Sudden inc-refuse in l'ension ou lhe lunvsei' (willvolute ziguinsl. 'he plerizfiul'e ol'f the springs il :1nd this willenlise :1 relative movement bel'ueeu ille Keure 25 und :lo :ind :i comeeiioinliiigi' iloiigilmliiml movemeuly willi the nul` 3l. which willmove l'he siem l5 lio the leiliY of Figline fl lo Jeifmill llie spring5T to lfoi'ee the ljievelleil poi'lion 53 lovvuid lhe sent und i'lmsShut olll el', lezieli- :i pm'lz ol the live Sleum sumilv lo `theeylimlele. lli lhe i'elulivii nml'ion between the dlfum und the {Ieui' iis: Sii'llieiiml. lfhe elem vvill be n'ioved l'mf enough to J[he lell4in ligme Jl; to permit che bevelled poi-lion 525 lo heul; zig'liuel. lhe:lout 5l. `which will Elon lhe liuviwhei' pvoejiess ol" lhe piel'ouvulve f-l-S) lo lhe lell". VFlu'l'hei movemenl ofi 'lhe Aelem,l'hei'e'lioi'e, will open the vulve Ylol'med bv the beve'lled end 11Tund [he hevelled siezili lil lo eenneelthe'chumbei he n'ilh lhe exlmueiehmnbei lil l'lnough lhe openings lk ."il und 52. This' will fire lieve:in v eonipveesioii lin lihe ekvlimlevs und will fpei'mi, lh' i Lloovmhuul `und the eulule To puy onli. oon :is the lensm on the huu'eei isrelieved` lbe iuu'inglu will exlend lo emule u reverse ieliel? movementhelween lhe geen; (l mid T und :i ei'u'i'eripoildingr veveiee moi'ion ol`the elem l5 lio restore the vulve 19 lo ils oiigiiuil position.

in'iilni'ljvi :i deei'euse in Tension below uo1fmul ou lhe hun'uev moveethe elleni flln "sind with il: the vulve i9` eo llhe right Vin Figureel. l'hel'elnY admitting' un uddilioiml uuioilnt oll sloom lo `theelvlindeie lo wind in the Sleek muil the noifn'uil lension iS l'eeli'nedwhen, b v l'he 'relflliive movemenY between lihe eieuis und "L :u:dwisei'ibed I )e'lole {ih vulve em 415 will ugfiin be moved to the ieltin Figui-e al lo resil'ol'e the 7zilve lo ils no1-mul noSilion.

B v menus oli the hund Wheel. G8, the vulve 65 nuev be moved lio `iheextreme right ol its position shown in Figure, fl, to reverse the`lireelion oli rotation ol' the CS1-milfs 19 und the Winding` drum, but.since this iu noty purl; ol. mv `pveeent invention, `'fui-therdesiefl'ipi-ion lheieoi is imueeessmy.

'l also ynelievubly provide uulou'mliie means 'limnmiuluininf: uSubstantially const-uut lenulh o'lii'he huvveei' thi'oilglh u device"which will new be def-teifbed. Should u pei'n'mneut iuei'euse ordeeifeuse of lensiou be applied lto the hmvsei' vcilih the devie so'fuif deeeifilied` en indelnnl'e umouut oil? huvvrlter n'iuy be eendeuuee the drum 2 lo 3 l il? lill oulz oi' wound in. To prevent thisomlil1iom ineens uve Vpvovideiil fol uutoilmtioilly iniu'eeeinp; lhe.noifmul elzeum pressure on the evliudei's lo prevent los@ of hmveei',o1` deeieuein the novinul Slem presente, on the evlindes lo preventimeessive vifiudiiug;l in of 4ehe huwsel'. .lliseuniing lhut there 'is:L pelmii 1 all friction member 96.

. shaft 27 and is connected thereto through a square jaw clutch member83 operated by a lever 84, pivoted at 85, and provided at its end withan operating handle 86. It will be seen, therefore, that'the bevel gear8O can be connected'to or disconnected from the shaft 27 at the will ofthe operator. rIhe opposite end of' the shaft 82 is provided with abevel gear 87 which engages a bevel gear 88: on a shaft 89 mounted inbearings 90 and 91. provided with a gear 92 which engages a gear 93 on astub shaft 94, the saine being provided with a friction clutch member 95i which engages a secondfriction clutch mein-v .ber 96 feathered oni theshaft 97 to permit it to move longitudinally thereon. The two 1- clutchmembers 95 and 96 are maintained in frictional engagement by acompression spring 98 which is interposed betweena collar 99 on theshaft 97 and t-he hub of the The tension of the spring 98 is adjusted bymeans of the lock nuts 100 engaging the collar 99. A pinion 101 yissecured on the shaft 97 and engages the gear 43.

hen the automatic arrangement just described isl in operation, byconnecting` the gear 8O to the shaft 27 by the clutch member, apermanent increase in tension on thev hawser, which causes the engine tooverhaul and the hawser to be paid out, will rotate the shaft 27 and,through the gears 80, 81,

87 and 88, this will rotate the 'shaft 89, and

through the gears 92 and 93 and the friction clutch members and 96, theshaft 97 will be rotated and thereby the gear 101 and the gear 43. Therotation of the gearV 43 will move the stem 45 to the right, 4) therebyopening the valve 53, 54 to admit an additional amount of steam to thesteam cylinders, and hence increase the normal steam pressure in thecylinders to balance the increased tension on the hawser and preventfurther paying out of the hawser. Similarly, a permanent decrease intension on the hawser will produce a decrease in steam pressure in thesteam cylinders to prevent an indefinite winding in of the hawser. It isto be understood, however, that the automatic arrangement formaintaining substantially constant length of liawser does not interferewith the device for maintaining substantially constant tension on thehawser as previously described. i

lVhile I have describedmy invention as applied to a. steam actuatedengine, it will be understood that any other form of motor The end ofthe- The opposite end of the shaft 89 isy ment or the lever 3G similarlyto tliemanner Yin which steam is controlled by such lever in theillustrative embodimentw y f f It will also be' understood thatv variousmodifications and changes may be` made withoutdeparting from the spiritof my invention. Y

I claim: r Y 1. In combination, a winding drum, motor, a rotatablemember driven by said motor and located beside said drum,-a yieldingpower transmitting device interposed between said rotatable member andsaid drum and located atl the side of said member remote from the drum,and means responsive to relative movements of said drum and said memberfor controlling power supply to said motor,

In combination, a winding` drum and the shaft on which it is mounted,motor, a rotatable member driven by said motor and mounted on the drumshaft, a resilient connection between said rotatable member and thedrum, an auxiliary shaft, relatively movable rotatable devices mountedon said auxiliary shaft and actuated by said druinand said rotatablemember respectively, and means responsive to the relative movement ofsaid devices for controlling power supply to said motor. f

In combination, a motor, a rotary member driven by said motor, a windingdrum, a yielding power-transmitting connection between the rotary memberand the drum, and means to maintain the power supply to the motorsubstantially constant for a predetermined torqueY of the drum, saidmeans being operable by relative rotation of said rotary member and saiddrum to decrease the power supply to the motorin accordance with a.suddenly increased torque of the drum, and means to increase the powersupply to the motor when the torque of the drum is increased above thepredetermined amount for a sufficiently long period to cause the drum tobe overhauled.

4. In combination, a winding drum provided with a gear and the shaft onwhich it is mounted, a motor, a gear wheel mounted on said shaft besidethe drum and actuated by said motor, a yielding power transmittingdevice interposed between said drum and said gear wheel, an auxiliaryshaft, relatively movable gears mounted on said auxiliary shaft andoperated by the drum gear and said gear wheel respectively, and meansresponsive to the relative movements of saidV gears on the auxiliaryshaft for controlling power supply to said motor.

5. In combination, a winding drum, a

lit)

driven member, including a `gear, rotatable on the axis oil the drinn, amotor to drive Said driven 111en1be1', e` yieldingl poweretransnnttng'eonneetion between tl1e driven membe' and tbe drnm, a rear on said drum,a. pair of relativelv movable members, driven `reepeetirely by tl1e`rear on tl1e drnm and the rear on the driven member, said n1e1n bersbeingi arranged to be maintained in lixed relation lo eaeli other whensaid gears are turning` in unison and to be moved relatively when saidgears rotate relatively," to earn other, and mennel operable b y tlierelative movement ol said relatively movable membern to Control tbeponer supply to Said motor.

6.111 eo111bination, a Winding` drinn, a driven member, lnelnding` a`gear, rotatable 30 relative movement of said relatively movable membersto control the power Supply to said motor.

7.111 combination, a winding drinn, a driven member, including a gear,rotatable on tlle axis oit' the drain, a motor to drive said drivenmember, a yielding power-trane milling connection between the drivenmember and the drum, a gear on said drum, a pair olf eo-axial rotatablemembers, geared respertively to tlle ,near on the drnm and tbe fear onthe driven member. said members being connected b v screw tlireadecoaxial wit-l1 the axes olE said members to canse relativelylongitudinal motion between them when said members are turned atdill'erent speeds, and means operable by relative movement of' SaidrelatiwbY movable membere` to control tbe power supply to said motor.

8.111 eon'lbination, a "winding drinn, a driven member rotatable ont-lie axis oi' the drinn, a ponier-trans1nitting; spring located at oneside olf' said axis and having one end attaebed to the drum and tl1eother end atturned to said member, a motor to drive said driven member,and means responsive to rela tive rotation of said rotary member andsaid drum to control the power supply to said motor.

THMAS SPENCER MILLER.

